3 years ago

The bird at right watches the waves. If the portion of a wave between two crests passes the pole each second. Wavelength is 1m.

Physics

1 answer:

laila [671]3 years ago

8 0

A what is the speed of the wave

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Write a sentence or short paragraph that defines and explains an adaptation

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Adaptation is when a living thing changes its behavior to survive in its surroundings.

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What was the speed of a space shuttle that orbited Earth at an altitude of 1482 km?

gregori [183]

Answer:

v = 7121.3 m/s

Explanation:

As we know that the centripetal force for the space shuttle is due to gravitational force of earth due to which it will rotate in circular path with constant speed

so here we will have

$\frac{mv^2}{r} = \frac{GMm}{r^2}$

here we know that

r = orbital radius = 6370 km + 1482 km

$r = 7.852 \times 10^6 m$

also we know that

$M = 5.97 \times 10^{24} kg$

now we will have

$v^2 = \frac{(6.67 \times 10^{-11})(5.97 \times 10^{24})}{7.852 \times 10^6}$

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$v = 7121.3 m/s$

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3 years ago

Read 2 more answers

The melting point of potassium thiocyanate determined by a student in the laboratory turned out to be 174.5 oC. The accepted val

yaroslaw [1]

Answer:

0.75%

Explanation:

Measured value of melting point of potassium thiocyanate = 174.5 °C

Actual value of melting point of potassium thiocyanate = 173.2 °C

Error in the reading = |Experimental value - Theoretical value|

= |174.5 - 173.2|

= |1.3|

Percentage error = (Error / Theoretical value) × 100

= (1.3 / 173.2)×100

= 0.75 %

∴ Percentage error in the reading is 0.75%

4 0

3 years ago